飞秒光脉冲基于交叉相位调制的压缩脉冲对的产生

数值模拟了在喇曼散射效应影响下,波长位于反常色散区的高阶孤子泵浦脉冲与波长在正常色散区的信号脉冲通过交叉相位调制作用产生的压缩脉冲对.结果表明,由于受喇曼效应的影响,飞秒信号脉冲产生的脉冲对不再保持对称,滞后的蓝移脉冲峰值功率随传输距离的增加而减小,产生孤子红移.同时发现喇曼系数增大,超前红移脉冲峰值功率增加,滞后蓝移脉冲峰值功率降低.分析了孤子阶数和正、负走离效应对脉冲压缩对变化规律的影响.

Generation of the Femtosecond Optical Pulse Compression Pair Base on Cross-phase Modulation

It was numerically simulated that under Raman scattering effects,high-order soliton pump-pulse at wavelength anomalous dispersion district and signal pulse wavelength in the normal dispersion,through cross-phase modulation effects ,produce compression pulse pair.The results show that ,because of the Raman effect,the femtosecond signal pulse is no longer maintain symmetry,and the lagging behind the blue shift pulse peak power decreases with the increase of transmission distance and solitons redshift appear.And it is found that with the Raman coefficient increasing,the lagging blue shift lower peak powerdecreases with the increase of the advance redshift pulse peak power.Finally,the order of soliton and positive and negative walk-off effect impact on the change of pulse compression pair were analyzed.